adoroszlai commented on code in PR #5407:
URL: https://github.com/apache/ozone/pull/5407#discussion_r1361600826


##########
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/ratis/OzoneManagerDoubleBuffer.java:
##########
@@ -108,7 +108,7 @@ public final class OzoneManagerDoubleBuffer {
   private final boolean isTracingEnabled;
   private final Semaphore unFlushedTransactions;
   private final FlushNotifier flushNotifier;
-  private final String threadPrefix;
+  private String threadPrefix = "";

Review Comment:
   This should be left as it was, and we also need to keep the assignment in 
the constructor.  Defauilt value of `""` should be set on the corresponding 
variable in the builder.
   
   ```suggestion
     private final String threadPrefix;
   ```



##########
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/ratis/OzoneManagerStateMachine.java:
##########
@@ -128,7 +128,7 @@ public OzoneManagerStateMachine(OzoneManagerRatisServer 
ratisServer,
 
     ThreadFactory build = new ThreadFactoryBuilder().setDaemon(true)
         .setNameFormat(threadPrefix +
-            "OM StateMachine ApplyTransaction Thread - %d").build();
+            "OM_StateMachine_ApplyTransaction_Thread - %d").build();

Review Comment:
   ```suggestion
               "OMStateMachineApplyTransactionThread-%d").build();
   ```



##########
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OzoneManager.java:
##########
@@ -3246,7 +3246,7 @@ public boolean triggerRangerBGSync(boolean noWait) throws 
IOException {
     // Trigger Ranger BG Sync
     if (noWait) {
       final Thread t = new Thread(bgSync::triggerRangerSyncOnce,
-          threadPrefix + "Trigger RangerSync");
+          threadPrefix + "Trigger_RangerSync");

Review Comment:
   ```suggestion
             threadPrefix + "RangerSync");
   ```



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